Noun
VTR (plural VTRs)
Initialism of videotape recorder.
In 1959, JVC developed a two-head video tape recorder, and by 1960 a color version for professional broadcasting. citation In 1964, JVC released the DV220, which would be the company's standard VTR until the mid-1970s. Source: Internet
The audio signal is commonly recorded on a VTR track or other storage media. Source: Internet